An officer was assaulted by an inmate at the Limon Correctional Facility.

Inmate Ryan Spear, 29, assaulted the officer, who was taken to a hospital and treated for injuries, the Colorado Department of Corrections said in a Friday news release. Fellow officers intervened and were able to stop the assault.

Spear, who has been in prison since 2010 on convictions out of Douglas and Arapahoe counties, has been transferred to another prison. An investigation is ongoing.

Kieran Nicholson covers breaking news for The Denver Post. He started at the Post in 1986, at the old building on 15th and California streets. Nicholson has covered a variety of beats including suburbs, courts, crime and general assignment.

Prosecutors and investigators on Friday detailed the rising tensions between the two neighbors, a combative relationship that ended with the fatal shooting of the 46-year-old Cunningham, an assistant high school principal in Aurora and former University of Colorado football star.